CN214533092U - Two-pole steam jet air extractor for steam turbine - Google Patents
Two-pole steam jet air extractor for steam turbine Download PDFInfo
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- CN214533092U CN214533092U CN202120879946.5U CN202120879946U CN214533092U CN 214533092 U CN214533092 U CN 214533092U CN 202120879946 U CN202120879946 U CN 202120879946U CN 214533092 U CN214533092 U CN 214533092U
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Abstract
The utility model discloses a two poles of earth penetrate vapour air ejector for steam turbine, the mixing chamber shell of the uncovered setting in one side, the side of mixing chamber shell is fixed with the exhaust tube rather than the inner chamber intercommunication, the mixing chamber shell is kept away from uncovered one side and is seted up through-hole and be equipped with nozzle assembly, the mixing chamber shell is close to open-ended one side and is fixed with a toper section of thick bamboo. This a two poles of earth penetrate vapour air ejector for steam turbine, the nozzle department of air ejector is provided with adjusting part, when steam passes through the nozzle, adjusting part can adjust the scope that the nozzle sprayed steam according to the size of steam discharge is automatic, both guarantee that steam can spout through the nozzle fast, can carry out effectual step-down acceleration to steam again, the mixing chamber of being convenient for is in the negative pressure and with the air mixture suction in the condenser, in order to maintain vacuum state in the condenser, the steam of being convenient for does work to the steam turbine and generates electricity, high durability and convenient operation.
Description
Technical Field
The utility model relates to a steam turbine power generation facility technical field specifically is a two poles of earth penetrate vapour air ejector for steam turbine.
Background
The steam turbine is a rotary steam power device, high-temperature and high-pressure steam passes through a nozzle to accelerate to form air flow, the air flow is sprayed onto blades, a rotor provided with blade rows rotates, work is performed outwards at the same time, the steam in the steam turbine is collected into a condenser to be condensed after the work is performed, an air extractor is used for continuously extracting a mixture of air leaking into the condenser and uncondensed air from the condenser, the condenser is kept to operate under high vacuum all the time, the air extractor can be divided into a water-jet air extractor and a steam-jet air extractor, and the difference is mainly that working media are different.
The steam jet air extractor mainly comprises a working nozzle, a mixing chamber and a diffuser pipe, wherein working steam enters the nozzle, then is depressurized and accelerated to enable the pressure in the mixing chamber to be lower than the pressure in the condenser, an air mixture in the condenser is sucked into the mixing chamber to be mixed, homogenized and subjected to energy exchange with the working steam, and finally is decelerated and pressurized in the diffuser pipe, and is discharged into the atmosphere in a state of being slightly higher than the atmospheric pressure.
But the nozzle size in the common steam ejector that penetrates is mostly fixed, can't take place corresponding change according to the size of working steam emission, and when the working steam emission was big, part working steam can't lead to the aspirator to appear the inflation even explosion through the nozzle fast, and the working steam emission can't carry out effectual step-down acceleration rate to working steam again for a short time to be not convenient for the mixing chamber form the air mixture suction mixing chamber in the low pressure environment with the condenser in, influence the use of steam turbine.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is overcome current defect, a two poles of the earth penetrate vapour air ejector for steam turbine is provided, the nozzle department of air ejector is provided with adjusting part, when steam passes through the nozzle, adjusting part can be adjusted the automatic scope of nozzle injection steam according to the size of steam emission, both guarantee that steam can fast through the nozzle blowout, can carry out effectual step-down acceleration to steam again, be convenient for the mixing chamber be in the negative pressure and with the air mixture suction in the condenser, in order to maintain vacuum state in the condenser, the steam of being convenient for does work to the steam turbine and generates electricity, high durability and convenient use, and the steam generator is simple in structure, and convenient operation, can effectively solve the problem in the background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a two poles of earth penetrate vapour air ejector for steam turbine, includes the open mixing chamber shell that sets up in one side, the side of mixing chamber shell is fixed with the exhaust tube rather than the inner chamber intercommunication, mixing chamber shell keeps away from uncovered one side and offers through-hole and be equipped with nozzle assembly in the through-hole, mixing chamber shell is close to open-ended one side and is fixed with a toper section of thick bamboo, and one side that the mixing chamber shell was kept away from to a toper section of thick bamboo is fixed with the choke, one side that the toper section of thick bamboo was kept away from to the choke is fixed with outer expand the pipe.
Nozzle assembly is including fixing the steam chest in the through-hole, the steam chest is close to the open one side of mixing chamber shell and has seted up the opening, and both sides are close to the open-ended position and have all seted up the mounting hole about the steam chest, the steam chest tank wall rotates near the position symmetry of mounting hole and installs the regulating plate, and the side of regulating plate rotates and installs first bumper shock absorber, the stiff end of first bumper shock absorber is articulated with the inner wall of mixing chamber shell.
As a preferred technical scheme of the utility model, be equipped with one-way subassembly in the exhaust tube, one-way subassembly is including fixing the location section of thick bamboo on the exhaust tube inner wall, the activity joint has the ball sealer in the location section of thick bamboo, the downside of a location section of thick bamboo is fixed with the locating rack spacing to the ball sealer.
As a preferred technical scheme of the utility model, the upside of locating rack is fixed with the second bumper shock absorber of setting in a location section of thick bamboo, the flexible end of second bumper shock absorber is fixed with the push pedal with a location section of thick bamboo inner wall sliding contact, the bleeder vent has evenly been seted up to the side of push pedal.
As a preferred technical scheme of the utility model, first bumper shock absorber only is provided with one, is equipped with the linkage between two regulating plates, the linkage include with steam chest inner wall sliding connection's deflector, and the side of deflector rotate respectively install with two regulating plate sides rotate the connecting rod of being connected.
As an optimal technical scheme of the utility model, the closing plate is all installed to the both sides of regulating plate, the closing plate is kept away from the inner wall sliding contact of one side of regulating plate and steam chest.
As an optimized technical scheme of the utility model, one side that the outer pipe that expands keeps away from the choke is fixed with the protection network.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a two poles of earth penetrate vapour air ejector for steam turbine, when work steam emission is big, work steam promotes the first bumper shock absorber of regulating plate extrusion and rotates, makes nozzle assembly spray high velocity air's area increase, guarantees that work steam can both effectively spout through nozzle assembly, prevents that work steam from gathering in the air inlet department of air ejector and leading to the air ejector inflation even explosion.
2. The utility model discloses a two poles of earth penetrate vapour air ejector for steam turbine, work steam emission is hour, and first bumper shock absorber promotes the regulating plate and rotates the area that makes nozzle assembly spray high velocity air flow and reduce, makes nozzle assembly effectively to work steam step-down acceleration to guarantee that work steam emission also can form high velocity air flow through nozzle assembly in the hour, the air mixture in this air ejector of being convenient for will the condenser is taken out.
3. The utility model discloses a two poles of earth jet ejector for steam turbine, when the aspirator used, the aspirator passed through the exhaust tube and extracts air mixture in the condenser, thereby the air mixture of extraction promotes the air vent that sealed ball extruded second bumper shock absorber opened the position tube, when this aspirator did not use, because of the continuous condensation of vapor in the condenser water, so pressure in the condenser is less than the pressure in the aspirator, atmospheric pressure in the aspirator promotes the sealed ball and seals the position tube to prevent that outside gas from flowing backward to the condenser in, the condenser of being convenient for is in vacuum state.
4. The utility model discloses a two poles of earth penetrate vapour air ejector for steam turbine, when air ejector and condenser all do not use, the second bumper shock absorber promotes the ball sealer through the push pedal and seals to the location section of thick bamboo, prevents that impurity in the outside air from leading to the fact the pollution, the use of the condenser of being convenient for in getting into the condenser through the location section of thick bamboo.
5. The utility model discloses a two poles of earth penetrate vapour air ejector for steam turbine, the nozzle department of air ejector is provided with adjusting part, when steam passes through the nozzle, adjusting part can adjust the scope of nozzle injection steam according to the size of steam emission is automatic, both guarantee that steam can fast through the nozzle blowout, can carry out effectual step-down acceleration to steam again, the mixing chamber of being convenient for is in the negative pressure and with the air mixture suction in the condenser, with vacuum state in maintaining the condenser, the steam of being convenient for does work to the steam turbine and generates electricity, high durability and convenient operation.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1;
FIG. 3 is a schematic structural view of the nozzle assembly of FIG. 2;
fig. 4 is an enlarged schematic view of the structure at a in fig. 2.
In the figure: the device comprises a mixing chamber shell 1, a conical barrel 2, a throat pipe 3, an expanding pipe 4, a nozzle assembly 5, a steam box 51, an adjusting plate 52, a first shock absorber 53, a sealing plate 54, a connecting rod 55, a guide plate 56, an exhaust pipe 6, a one-way assembly 7, a positioning barrel 71, a sealing ball 72, a positioning frame 73, a second shock absorber 74, a push plate 75 and a protective net 8.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a two-pole steam jet air ejector for a steam turbine comprises a mixing chamber shell 1 with one side open, an air exhaust pipe 6 communicated with the inner cavity of the mixing chamber shell 1 is fixed on the side surface of the mixing chamber shell 1, a through hole is formed on the side of the mixing chamber shell 1 far away from the open, a nozzle assembly 5 is arranged in the through hole, working steam enters the mixing chamber shell 1 through the nozzle assembly 5 in a high-speed airflow mode, so that the air pressure in the mixing chamber shell 1 is smaller than the air pressure in a condenser, an air mixture in the condenser is extracted, a conical barrel 2 is fixed on the side of the mixing chamber shell 1 close to the open, the cross section of the conical barrel 2 far away from the side of the mixing chamber shell 1 is gradually reduced, a throat pipe 3 is fixed on the side of the conical barrel 2 far away from the mixing chamber shell 1, the conical barrel 2 is convenient for the working steam and the air mixture to be mixed and enter the throat pipe 3, and an outward expansion pipe 4 is fixed on the side of the throat pipe 3 far away from the conical barrel 2, the cross-sectional area of the side of the outer expanding pipe 4 away from the throat pipe 3 is gradually increased.
Working steam enters the mixing chamber shell 1 through the nozzle assembly 5, the pressure of the working steam is reduced and the speed of the working steam is increased by the nozzle assembly 5 when the working steam passes through the nozzle assembly 5, the working steam enters the mixing chamber shell 1 in a high-speed airflow mode, a negative pressure area is formed near the outlet of the nozzle assembly 5 by the high-speed airflow, the pressure difference exists between the condenser and the mixing chamber shell 1, and an air mixture in the condenser is extracted into the mixing chamber shell 1 through the air extraction pipe 6.
The air mixture and the working steam are mixed and then enter the throat pipe 3, the throat pipe 3 enables the air mixture and the working steam to be fully mixed, the fully mixed gas enters the outer expanding pipe 4, the outer expanding pipe 4 enables the volume of the fully mixed gas to be gradually increased, and the air mixture pumped out of the condenser is conveniently discharged into the atmosphere.
When the discharge amount of the working steam is large, the working steam pushes the adjusting plate 52 to extrude the first shock absorber 53 to rotate, so that the area of the high-speed airflow sprayed by the nozzle assembly 5 is increased, the working steam can be effectively sprayed out through the nozzle assembly 5, and the working steam is prevented from accumulating at the air inlet of the air extractor to cause the air extractor to expand or even explode.
When the discharge amount of working steam is small, the first damper 53 pushes the adjusting plate 52 to rotate so that the area of the nozzle assembly 5 for jetting high-speed airflow is reduced, the nozzle assembly 5 is effectively used for reducing the pressure and increasing the speed of the working steam, the high-speed airflow can be formed through the nozzle assembly 5 when the discharge amount of the working steam is small, and the air mixture in the condenser can be pumped out conveniently by the air pump.
Be equipped with one-way subassembly 7 in the exhaust tube 6, one-way subassembly 7 is including fixing the location section of thick bamboo 71 on 6 inner walls of exhaust tube, location section of thick bamboo 71 is hourglass form, the movable joint has a ball sealer 72 in the location section of thick bamboo 71, ball sealer 72 is located a location section of thick bamboo 71 inner chamber lower part, the downside of a location section of thick bamboo 71 is fixed with the locating rack 73 to ball sealer 72 spacing, the upside of locating rack 73 is fixed with the second bumper shock absorber 74 that sets up in a location section of thick bamboo 71, the flexible end of second bumper shock absorber 74 is fixed with the push pedal 75 with a location section of thick bamboo 71 inner wall sliding contact, the bleeder vent has evenly been seted up to the side of push pedal 75.
When this aspirator used, the aspirator passed through exhaust tube 6 and extracts air mixture in the condenser, thereby the air mixture of extraction promotes sealed ball 72 and extrudes the air vent that second bumper shock absorber 74 opened position tube 71, thereby when this aspirator did not use, because of the continuous condensation of vapor in the condenser becomes water, so pressure in the condenser is less than the pressure in the aspirator, atmospheric pressure in the aspirator promotes sealed ball 72 and seals position tube 71 to prevent that outside gas from flowing backward to in the condenser, the condenser of being convenient for is in vacuum state.
When this aspirator and condenser all do not use, second bumper shock absorber 74 promotes the ball sealer 72 through push pedal 75 and seals to the position tube 71, prevents that the impurity in the outside air from leading to the fact the pollution to the inner chamber of condenser in getting into the condenser through position tube 71, the use of the condenser of being convenient for.
The first damper 53 is provided with only one, a linkage member is provided between the two adjusting plates 52, the linkage member includes a guide plate 56 slidably connected to the inner wall of the steam box 51, and the side surfaces of the guide plate 56 are rotatably provided with connecting rods 55 rotatably connected to the side surfaces of the two adjusting plates 52, respectively.
When one of the adjusting plates 52 rotates, the adjusting plate 52 drives the guide plate 56 to slide on the side surface of the steam box 51 through the connecting rod 55, the guide plate 56 drives the other adjusting plate 52 to rotate through the other connecting rod 55 in the sliding process, so that the two adjusting plates 52 are ensured to rotate at the same angle, working steam is conveniently sprayed out from the middle part of the nozzle assembly 5 to form high-speed airflow, and the high-speed airflow directly drives the extracted air mixture to enter the throat pipe 3.
The utility model discloses a rotation is connected but not limited to articulated, round pin hub connection, hinge connection.
One side of the outer expanding pipe 4, which is far away from the throat pipe 3, is fixed with a protective net 8, the protective net 8 plays a role in protecting the outer expanding pipe 4, and meanwhile, the protective net 8 prevents external objects from entering the outer expanding pipe 4 or the throat pipe 3 to cause the assembly to be polluted or damaged.
When in use:
working steam enters the mixing chamber shell 1 through the nozzle component 5, the pressure of the working steam is reduced and the speed of the working steam is increased by the nozzle component 5 when the working steam passes through the nozzle component 5, the working steam enters the mixing chamber shell 1 in a high-speed airflow mode, a negative pressure area is formed near the outlet of the nozzle component 5 by the high-speed airflow, the pressure difference exists between the condenser and the mixing chamber shell 1, and an air mixture in the condenser is extracted into the mixing chamber shell 1 through the air extraction pipe 6;
the air mixture and the working steam are mixed and then enter the throat pipe 3, the throat pipe 3 enables the air mixture and the working steam to be fully mixed, the fully mixed gas enters the outer expanding pipe 4, the outer expanding pipe 4 enables the volume of the fully mixed gas to be gradually increased, and the air mixture pumped out of the condenser is conveniently discharged into the atmosphere;
when the discharge amount of the working steam is large, the working steam pushes the adjusting plate 52 to extrude the first shock absorber 53 to rotate, so that the area of the high-speed airflow sprayed by the nozzle assembly 5 is increased, the working steam can be effectively sprayed out through the nozzle assembly 5, and the air extractor is prevented from being expanded or even exploded due to accumulation of the working steam at the air inlet of the air extractor;
when the discharge amount of working steam is small, the first shock absorber 53 pushes the adjusting plate 52 to rotate, so that the area of the nozzle assembly 5 for spraying high-speed airflow is reduced, the nozzle assembly 5 effectively reduces the pressure and increases the speed of the working steam, and high-speed airflow can be formed through the nozzle assembly 5 when the discharge amount of the working steam is small, and the air pump can conveniently pump out air mixtures in the condenser;
when one of the adjusting plates 52 rotates, the adjusting plate 52 drives the guide plate 56 to slide on the side surface of the steam box 51 through the connecting rod 55, and the other adjusting plate 52 is driven to rotate through the other connecting rod 55 in the sliding process of the guide plate 56, so that the rotating angles of the two adjusting plates 52 are ensured to be the same, working steam is conveniently sprayed out from the middle part of the nozzle assembly 5 to form high-speed airflow, and the high-speed airflow directly drives the extracted air mixture to enter the throat 3;
when the air extractor is used, the air extractor extracts air mixture from the condenser through the air extraction pipe 6, the extracted air mixture pushes the sealing ball 72 to extrude the second shock absorber 74 so as to open the vent hole of the positioning cylinder 71, when the air extractor is not used, water vapor in the condenser is continuously condensed into water, so that the pressure in the condenser is lower than that in the air extractor, and the air pressure in the air extractor pushes the sealing ball 72 to seal the positioning cylinder 71, so that external air is prevented from flowing back into the condenser, and the condenser is convenient to be in a vacuum state;
when this aspirator and condenser all do not use, second bumper shock absorber 74 promotes the ball sealer 72 through push pedal 75 and seals to the position tube 71, prevents that the impurity in the outside air from leading to the fact the pollution to the inner chamber of condenser in getting into the condenser through position tube 71, the use of the condenser of being convenient for.
This a two poles of earth penetrate vapour air ejector for steam turbine, the nozzle department of air ejector is provided with adjusting part, when steam passes through the nozzle, adjusting part can adjust the scope that the nozzle sprayed steam according to the size of steam discharge is automatic, both guarantee that steam can spout through the nozzle fast, can carry out effectual step-down acceleration to steam again, the mixing chamber of being convenient for is in the negative pressure and with the air mixture suction in the condenser, in order to maintain vacuum state in the condenser, the steam of being convenient for does work to the steam turbine and generates electricity, high durability and convenient operation.
The non-public part of the utility model is the prior art, and the concrete structure, the material and the working principle are not detailed. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a two poles of earth penetrate vapour ejector for steam turbine, includes open mixing chamber shell (1) that sets up in one side, its characterized in that: an exhaust pipe (6) communicated with an inner cavity of the mixing chamber shell (1) is fixed on the side surface of the mixing chamber shell (1), a through hole is formed in one side, away from the opening, of the mixing chamber shell (1), a nozzle assembly (5) is arranged in the through hole, a conical barrel (2) is fixed on one side, close to the opening, of the mixing chamber shell (1), a throat pipe (3) is fixed on one side, away from the mixing chamber shell (1), of the conical barrel (2), and an outer expanding pipe (4) is fixed on one side, away from the conical barrel (2), of the throat pipe (3);
nozzle assembly (5) are including fixing steam box (51) in the through-hole, steam box (51) are close to mixing chamber shell (1) open one side and have seted up the opening, and both sides are close to the open-ended position and have all seted up the mounting hole about steam box (51), steam box (51) tank wall rotates near the position symmetry of mounting hole and installs regulating plate (52), and the side of regulating plate (52) rotates and installs first bumper shock absorber (53), the stiff end of first bumper shock absorber (53) is articulated with the inner wall of mixing chamber shell (1).
2. The two-stage steam ejector for a steam turbine according to claim 1, wherein: be equipped with one-way subassembly (7) in exhaust tube (6), one-way subassembly (7) are including fixing location section of thick bamboo (71) on exhaust tube (6) inner wall, the activity joint has ball sealer (72) in location section of thick bamboo (71), the downside of location section of thick bamboo (71) is fixed with locating rack (73) spacing ball sealer (72).
3. A two-stage steam ejector for a steam turbine according to claim 2, wherein: the upside of locating rack (73) is fixed with second bumper shock absorber (74) of setting in a location section of thick bamboo (71), the flexible end of second bumper shock absorber (74) is fixed with push pedal (75) with a location section of thick bamboo (71) inner wall sliding contact, the bleeder vent has evenly been seted up to the side of push pedal (75).
4. The two-stage steam ejector for a steam turbine according to claim 1, wherein: first bumper shock absorber (53) are provided with only one, are equipped with the linkage between two regulating plates (52), the linkage includes deflector (56) with steam chest (51) inner wall sliding connection, and the side of deflector (56) rotates respectively installs and rotates connecting rod (55) of being connected with two regulating plates (52) side.
5. The two-stage steam ejector for a steam turbine according to claim 1, wherein: sealing plates (54) are mounted on two sides of the adjusting plate (52), and one side, far away from the adjusting plate (52), of each sealing plate (54) is in sliding contact with the inner wall of the steam box (51).
6. The two-stage steam ejector for a steam turbine according to claim 1, wherein: and a protective net (8) is fixed on one side of the outer expanding pipe (4) far away from the throat pipe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120879946.5U CN214533092U (en) | 2021-04-27 | 2021-04-27 | Two-pole steam jet air extractor for steam turbine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120879946.5U CN214533092U (en) | 2021-04-27 | 2021-04-27 | Two-pole steam jet air extractor for steam turbine |
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| Publication Number | Publication Date |
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| CN214533092U true CN214533092U (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120879946.5U Active CN214533092U (en) | 2021-04-27 | 2021-04-27 | Two-pole steam jet air extractor for steam turbine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893261A (en) * | 2022-05-07 | 2022-08-12 | 新乡市汇能玉源发电有限公司 | Efficient steam turbine water jet air exhaust system control device |
| CN117469212A (en) * | 2023-12-26 | 2024-01-30 | 青州凯能热动设备有限公司 | Multistage steam jet air extractor system for steam turbine |
-
2021
- 2021-04-27 CN CN202120879946.5U patent/CN214533092U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893261A (en) * | 2022-05-07 | 2022-08-12 | 新乡市汇能玉源发电有限公司 | Efficient steam turbine water jet air exhaust system control device |
| CN114893261B (en) * | 2022-05-07 | 2023-12-08 | 新乡市汇能玉源发电有限公司 | Efficient control device for water injection and air extraction system of steam turbine |
| CN117469212A (en) * | 2023-12-26 | 2024-01-30 | 青州凯能热动设备有限公司 | Multistage steam jet air extractor system for steam turbine |
| CN117469212B (en) * | 2023-12-26 | 2024-03-26 | 青州凯能热动设备有限公司 | Multistage steam jet air extractor system for steam turbine |
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